Self-powered wireless environmental monitoring system for in-service bridges by galloping piezoelectric-triboelectric hybridized energy harvester  

作　　者：HUANG KangXu WANG XiaoFei WANG Li ZHOU YuHui LIU FuHai CHANG ShiYuan ZHU JunTao ZHOU YuXuan ZHANG He LUO JiKui 

机构地区：[1]College of Civil Engineering and Architecture,Zhejiang University,Hangzhou,310058,China [2]Anhui Transport Consulting&Design Institute Co.,Ltd.,Hefei,230088,China [3]College of Electronics&Information,Hangzhou Dianzi University,Hangzhou,310018,China [4]Center for Balance Architecture,Zhejiang University,Hangzhou,310058,China [5]College of Information Science&Electronic Engineering,Zhejiang University,Hangzhou,310027,China

出　　处：《Science China(Technological Sciences)》2024年第5期1498-1509,共12页中国科学（技术科学英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2020YFA0711700);the National Natural Science Foundation of China(Grant Nos.52122801,11925206,U22A20254,U23A20659,and51978609);Zhejiang Provincial Natural Science Foundation for Distinguished Young Scientists(Grant No.LR20E080003);the Key Research Project of Zhejiang(Grant No.LD22E030007);the“Leading Goose”R&D Program of Zhejiang Province(Grant No.2022C01136);Zhejiang University Education Foundation Global Partnership Fund(Grant No.100000-11320)。

摘　　要：The energy harvesting technology for the ubiquitous natural wind enables a desirable solution to the issue of distributed sensors in the bridge environmental sensing Internet of Things(Io T)system being restricted to conventional energy supply.In this work,a self-powered system based on a compact galloping piezoelectric-triboelectric energy harvester(GPTEH)is developed to achieve efficient wind energy harvesting.The GPTEH is constructed on the prototype of a cantilever structure with piezoelectric macro-fiber composite(MFC)sheets and a rectangular bluff body with triboelectric nanogenerators(TENGs).Through a special swing-type structural design with iron blocks inside the bluff body,the GPTEH exhibits preferable aerodynamic behavior and excellent energy conversion efficiency,compared to conventional cantilever kind of piezoelectric wind energy harvester(PWEH).The GPTEH also demonstrates the capability of high output power density(PEH of 23.65 W m^(-2)and TENG of 1.59 W m^(-2)),superior response wind speed(about 0.5 m s^(-1)),and excellent long-term stability(over 14000 cyclic tests).Furthermore,a power management system is developed to efficiently utilize the output energy from GPTEH to power the sensors and wirelessly transmit environmental data to the terminals.The proposed GPTEH-powered system exhibits a great potential for the bridge environmental monitoring and Io T technologies.

关 键 词：SELF-POWERED hybrid nanogenerator triboelectric nanogenerator macro-fiber composite wireless environmental monitoring system 

分 类 号：U446[建筑科学—桥梁与隧道工程] TP274[交通运输工程—道路与铁道工程]